505002981 has 16 divisors (see below), whose sum is σ = 770952704. Its totient is φ = 288039024.

The previous prime is 505002931. The next prime is 505002991. The reversal of 505002981 is 189200505.

It is not a de Polignac number, because 505002981 - 2¹⁰ = 505001957 is a prime.

It is a super-2 number, since 2×505002981² = 510056021637772722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (505002931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10495 + ... + 33468.

It is an arithmetic number, because the mean of its divisors is an integer number (48184544).

Almost surely, 2^505002981 is an apocalyptic number.

It is an amenable number.

505002981 is a deficient number, since it is larger than the sum of its proper divisors (265949723).

505002981 is a wasteful number, since it uses less digits than its factorization.

505002981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44520.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 505002981 is about 22472.2713805258. The cubic root of 505002981 is about 796.3389910946.

The spelling of 505002981 in words is "five hundred five million, two thousand, nine hundred eighty-one".